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Converters: Digital to Analog (D / A) Circuits   Page 4
Digital to Analog Circuits:   # - A       B - C     D-G      H - N       O - Z

Converters -- Main Page
Last Updated on:
Monday, October 03, 2011 06:07 PM


Circuits Designed by Dave Johnson, P.E. :

  • Low Power 12,000 Volt Power Supply -   If you need about 12,000 volts DC for an ion generator this circuit might be the ticket. It draws power from the 120vac power line but it uses a small 6KV camera flash trigger coil. The output signal is isolated from the power line. Although the circuit can only deliver about 5uA of current it can produce dangerous shocks, so be careful....
     

  • Miniature Isolated AC/DC Power Supply -  This circuit uses a novel approach to produce a fully isolated and regulated 5 volts @30ma from the 120vac power line. It uses two tiny SCRs that alternately discharge two capacitors through a miniature high frequency transformer. The voltage spikes produced through the transformer are rectified, filtered and regulated. A very common 8 ohm audio impedance matching transformer can be used for the transformer.
     

  • Non-isolated Off-line AC to DC Power Supply -  This compact efficient circuit can provide up to 100ma of a regulated 5 volts from an AC power source ranging from 20vac to 120vac. ….


Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:
How to Reliably Protect CMOS Circuits Against Power Supply OverVoltaging -  AN-311 Analog Devices Application Notes  (app note added 2/06) 
Image Compression-Spelling Out the Options -  AN-336A Analog Devices Application Notes  (app note added 2/06) 
Implement Infinite Sample-and-Hold Circuits using Analog Input/Output Ports -  AN-284 Analog Devices Application Notes  (app note added 2/06) 
Implementing an I2C® Reset -  AN-686 Analog Devices Application Notes  (app note added 2/06)
Improve Function Generators with Matched D/A Converters -  AN-322 Analog Devices Application Notes  (app note added 2/06)  AD7528 Dual 8-Bit CMOS Multiplying DAC Makes Function Generation Practical and Affordable
Input/Output Level Shifting with the AD7769 -  AN-224 Analog Devices Application Notes  (app note added 2/06) 

Interfacing the AD7549 to the MCS-48 & MCS-51 Microcomputer Families -  AN-326 Analog Devices Application Notes  (app note added 2/06) 
Interfacing Two 16 Bit AD1856 AD1861 Audio DACs with the Philips SAA7220 Digital Filter -  AN-207) Analog Devices Application Notes  (app note added 2/06)
Isolated ADC Reduces Power Consumption -  03/03/95 EDN-Design Ideas  / PDF contains multiple circuits, scroll to find this circuit....www.edn.com/archives/95/033095/07di1.htm....[Design Idea added 4/02] EDN is migrating links. This link is not verified.  Search the "title" EDN for new link.
JPEG Compression-Software Based? or Which Hardware Type? More Mysteries Clarified. -  AN-336B Analog Devices Application Notes  (app note added 2/06) 
Low Cost, Low Power Devices for HDSL Applications -  AN-414 Analog Devices Application Notes  (app note added 2/06) 
Low Cost, Two-Chip, Voltage-Controlled Amplifier & Video Switch -  AN-213 Analog Devices Application Notes  (app note added 2/06) 
Low-cost digital DAC provides digital three phase waveform synthesis -  7-Aug-08 Issue of EDN  Used in high volume in audio applications, a low-cost stereo DAC can generate three-phase AC waveforms in high precision.... [Design Idea by SA González, Universidad de Mar de Plata, Argentina, and R García-Gil, J Castelló, and JM Espí,Universidad de Valencia, Spain]
Low-Power Low-Voltage ADC is 0.05% Linear -  06/19/97 EDN-Design Ideas  The simple integrating 3V A/D converter in Figure 1a is small, requires no negative supply and no expensive precision components, and draws minimal supply current…. [Design Idea by John Wettroth, Maxim Integrated Products, Sunnyvale, CA]
LTC1451/52/53: 12-Bit Rail-To-Rail Micropower DACs in an SO-8 -  DN96  Design Notes (Linear Technology) (app note added 1/06)
Make a DAC with a microcontroller's PWM timer -  5-Sep-02 Issue of EDN  Many embedded-microcontroller applications require generation of analog signals. An integrated or stand-alone DAC fills the role. However, you can often use PWM signals for generating the required analog signals. You can use PWM signals to create both dc and ac analog signals.  This Design Idea shows how to use a PWM timer to simultaneously create a sinusoid, a ramp, and a dc voltage.... [Design Idea by Mike Mitchell, Texas Instruments Inc]
Methods of Controlling Laser Drivers: POTs & DACs -  Maxim Application Notes / 1010 / Jul-07)  (app note added 5/08)
MicroPower ADC has Eight Differential Channels -  05/22/97 EDN-Design Ideas  [Design Idea added 3/03] EDN is migrating links. This link is not verified.  Google the "title" EDN for new link.
Mixed Signal Circuit Technologies -  AN-280 Analog Devices Application Notes  (app note added 2/06)  Considers problems which arise when reality (& Murphy)  intervene in a design which otherwise seems satisfactory in terms of theory and modeling.
Multidecade BCD DAC uses resistors of only six values -  4-Feb-10 Issue of EDN  DAC uses fewer resistors than that of a previous Design Idea.... [Design Idea by Marián Stofka, Slovak University of Technology, Bratislava, Slovakia]
Multiphase DAC Modifies R 2r Ladder -  01/18/96 EDN-Design Ideas  The double-ladder DAC in Figure 1  suits ASIC or hybrid designs that require multiple DACs sharing an analog input but with different digital inputs and multiple analog outputs. The circuit is a modification of the standard R-2R resistive ladder in a CMOS multiplying DAC. The two DAC sections in Figure 1 share the longitudinal....[Design Idea added 08/05] EDN is migrating links. This link is not verified.  Google the "title" EDN for new link.
Multiple Output Range 16-Bit DAC Design Made Simple -  DN337  Design Notes (Linear Technology) (app note added 1/06)
New 16-Bit SO-8 DAC has 1lsb Max Inl & Dnl over Industrial Temperature Range Design Note 173 -  DN173  Design Notes (Linear Technology) (app note added 2/06)


Digital to Analog Circuits:   # - A       B - C     D-G      H - N       O - Z
Converters -- Main Page

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